Communication method, terminal, network device, communication system, computer program product, and storage medium

Abstract

Provided in the embodiments of the present disclosure are a communication method, a terminal, a network device, a communication system, a computer program product, and a storage medium. The method comprises: on the basis of first information, dropping a data packet at a first protocol layer of a terminal, wherein the first information is information acquired from a second protocol layer; and the first information is used for instructing to drop the data packet. The technical solution provided in the embodiments of the present disclosure can adapt to a packet drop mechanism into which AI has been introduced.

Description

Communication methods, terminals, network equipment, communication systems, computer program products and storage media Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to communication methods, terminals, network equipment, communication systems, computer program products, and storage media. Background Technology

[0002] In the field of communication technology, a timer-based packet loss mechanism has been introduced, which discards data packets after the timer expires or after the other end has confirmed successful data transmission. However, with the introduction of artificial intelligence (AI), the packet loss mechanism needs to be adjusted.

[0003] Summary of the Invention

[0004] With the introduction of AI, the packet loss mechanism needs to be adjusted.

[0005] This disclosure provides a communication method, a terminal, a network device, a communication system, a computer program product, and a storage medium.

[0006] According to a first aspect of the present disclosure, a communication method is provided, the method being executed by a terminal, the method comprising:

[0007] Based on the first information, the data packet is discarded at the first protocol layer of the terminal;

[0008] The first information is information obtained from the second protocol layer; the first information is used to indicate that the data packet should be discarded.

[0009] According to a second aspect of the present disclosure, a communication method is provided, the method being performed by a network device, the method comprising:

[0010] Based on the first information, the data packet is discarded at the first protocol layer of the network device;

[0011] The first information is information obtained from the second protocol layer; the first information is used to indicate that the data packet should be discarded.

[0012] According to a third aspect of the present disclosure, a terminal is provided, the terminal comprising:

[0013] The processing module is configured as follows:

[0014] Based on the first information, the data packet is discarded at the first protocol layer of the terminal;

[0015] The first information is information obtained from the second protocol layer; the first information is used to indicate that the data packet should be discarded.

[0016] According to a fourth aspect of the present disclosure, a network device is provided, the network device comprising:

[0017] The transceiver module is configured as follows:

[0018] Based on the first information, the data packet is discarded at the first protocol layer of the network device;

[0019] The first information is information obtained from the second protocol layer; the first information is used to indicate that the data packet should be discarded.

[0020] According to a fifth aspect of the present disclosure, a communication system is provided, wherein the communication system includes a terminal and a network device; the terminal is configured to implement the method of the first aspect, and the network device is configured to implement the method of the second aspect.

[0021] According to a sixth aspect of the present disclosure, a terminal is provided, the terminal comprising:

[0022] One or more processors;

[0023] The terminal is used to execute the method described in the first aspect.

[0024] According to a seventh aspect of the present disclosure, a network device is provided, the network device comprising:

[0025] One or more processors;

[0026] The network device is used to perform the method described in the second aspect.

[0027] According to an eighth aspect of the present disclosure, a computer program product is provided, including a computer program or instructions, which, when executed by a processor, implement the steps of the method described in the first aspect and / or the second aspect.

[0028] According to a ninth aspect of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions that, when executed on a communication device, cause the communication device to perform the methods provided in the first aspect and / or the second aspect.

[0029] The technical solutions provided in this disclosure can adapt to the packet loss mechanism after the introduction of AI.

[0030] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the embodiments of this disclosure. Attached Figure Description

[0031] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments of the invention.

[0032] Figure 1a is a schematic diagram of the architecture of a communication system according to an exemplary embodiment;

[0033] Figure 2a is a flowchart illustrating a communication method according to an exemplary embodiment;

[0034] Figure 3a is a flowchart illustrating a communication method according to an exemplary embodiment;

[0035] Figure 3b is a flowchart illustrating a communication method according to an exemplary embodiment;

[0036] Figure 4a is a flowchart illustrating a communication method according to an exemplary embodiment;

[0037] Figure 4b is a flowchart illustrating a communication method according to an exemplary embodiment;

[0038] Figure 5a is a schematic diagram of a communication system according to an exemplary embodiment;

[0039] Figure 6a is a schematic diagram of the structure of a terminal according to an exemplary embodiment;

[0040] Figure 6b is a schematic diagram of the structure of a network device according to an exemplary embodiment;

[0041] Figure 7a is a schematic diagram of the structure of a UE according to an exemplary embodiment;

[0042] Figure 7b is a schematic diagram of the structure of a communication device according to an exemplary embodiment. Detailed Implementation

[0043] This disclosure provides a communication method, a terminal, a network device, a computer program product, and a storage medium.

[0044] In a first aspect, embodiments of this disclosure provide a communication method, the method being executed by a terminal, the method comprising:

[0045] Based on the first information, the data packet is discarded at the first protocol layer of the terminal;

[0046] The first information is information obtained from the second protocol layer; the first information is used to indicate that the data packet should be discarded.

[0047] In the above embodiments, the data packet can be dropped at the first protocol layer of the terminal based on the first information obtained from the second protocol layer to indicate that the data packet should be dropped. This allows for direct instructions from the second protocol layer to drop the data packet, making the method of dropping the data packet more flexible.

[0048] In conjunction with some embodiments of the first aspect, in some embodiments, the first protocol layer is the Packet Data Convergence Protocol (PDCP) layer, and the second protocol layer is a higher layer than the first protocol layer.

[0049] In the above embodiments, the data packet can be dropped at the terminal's PDCP layer based on the first information obtained from the higher layers of the PDCP layer to indicate that the data packet should be dropped. This allows for more flexible data packet dropping methods that can be adapted to direct instructions from the higher layers of the PDCP layer.

[0050] In conjunction with some embodiments of the first aspect, in some embodiments, the higher layer is the Radio Resource Control (RRC) layer.

[0051] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0052] The second protocol layer sends the first information to the first protocol layer.

[0053] In the above embodiments, the second protocol layer can actively send the first information to the first protocol layer.

[0054] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes at least one of the following:

[0055] If the training task of the model is terminated or suspended, the second protocol layer sends the first information to the first protocol layer;

[0056] If the data packet is not received within the first time, the second protocol layer sends the first information to the first protocol layer;

[0057] The higher layer is used to manage the model; the first time is the time required for the terminal to send data packets to the network device.

[0058] In the above embodiments, the second protocol layer can send the first information to the first protocol layer when it is determined that the training task of the model has been terminated and / or when it is determined that the data packet has not been obtained in the first time, which makes the implementation more flexible.

[0059] In conjunction with some embodiments of the first aspect, in some embodiments, the first information is used to indicate at least one of the following:

[0060] First data packet;

[0061] Packet data of QoS stream;

[0062] First type of data packet;

[0063] Data packets to be transmitted on the DRB are carried wirelessly.

[0064] Data packets to be transmitted on the logical channel (LCH);

[0065] Data packets in the first group.

[0066] In the above embodiments, the first information can indicate the dropped data packets based on different granularities, making the implementation more flexible.

[0067] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0068] It is determined that the terminal supports the first capability;

[0069] The first capability includes at least one of the following:

[0070] Based on the ability to discard data packets based on the first data packet;

[0071] The ability to drop packets based on the QoS stream;

[0072] The ability to drop packets based on the first type of packet;

[0073] Based on the ability to discard data packets in the DRB to be transmitted;

[0074] Based on the ability of the data packets to be transmitted in the LCH to discard data packets;

[0075] The ability to discard packets based on packets in the first group.

[0076] In the above embodiments, the first capability supported by the terminal can be clearly determined, thereby implementing packet loss based on the first capability.

[0077] In conjunction with some embodiments of the first aspect, in some embodiments, the dropping of data packets at the first protocol layer of the terminal based on the first information includes at least one of the following:

[0078] Upon confirming receipt of the first information, the data packet is discarded at the first protocol layer of the terminal.

[0079] If it is determined that the first information has been received and the first condition is met, the data packet is discarded at the first protocol layer of the terminal; wherein, the first condition is used to trigger the discarding of the data packet at the first protocol layer;

[0080] Based on the first information and the second information, the data packet is discarded at the first protocol layer of the terminal; wherein, the second information is used to indicate whether the data packet is associated with a first timer or not, and the first timer is a timer for discarding the data packet.

[0081] In the above embodiments, data packets can be dropped at the first protocol layer of the terminal in different scenarios, making the implementation more flexible.

[0082] In conjunction with some embodiments of the first aspect, in some embodiments, the step of discarding data packets at the first protocol layer of the terminal based on the first information and the second information includes at least one of the following:

[0083] If it is determined that the first information has been received and that the data packet is not associated with the first timer, the data packet is discarded at the first protocol layer of the terminal.

[0084] Once it is determined that the first information has been received and the data packet is associated with the first timer, the data packet is discarded at the first protocol layer of the terminal, whether the first timer times out or not.

[0085] In the above embodiments, whether the data packet is associated with or not with the first timer, the data packet can be discarded at the first protocol layer of the terminal in different ways, making the implementation more flexible.

[0086] In conjunction with some embodiments of the first aspect, in some embodiments, the first information is also used to indicate that the data packet is discarded upon arrival at a first moment.

[0087] In the above embodiments, the data packet can be discarded promptly if it arrives at the first moment.

[0088] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0089] The first protocol layer of the terminal sends third information to the third protocol layer of the terminal;

[0090] The third information is used to indicate: discarding data packets that have been sent from the first protocol layer to the third protocol layer; the third protocol layer is a lower layer than the first protocol layer.

[0091] In the above embodiment, the first protocol layer of the terminal sends third information to the third protocol layer of the terminal to discard data packets that have been sent from the first protocol layer to the third protocol layer.

[0092] Secondly, embodiments of this disclosure provide a communication method, the method being executed by a network device, the method comprising:

[0093] Based on the first information, the data packet is discarded at the first protocol layer of the network device;

[0094] The first information is information obtained from the second protocol layer; the first information is used to indicate that the data packet should be discarded.

[0095] In conjunction with some embodiments of the second aspect, in some embodiments, the first protocol layer is the Packet Data Convergence Protocol (PDCP) layer, and the second protocol layer is a higher layer than the first protocol layer.

[0096] In conjunction with some embodiments of the second aspect, in some embodiments, the higher layer is the Radio Resource Control (RRC) layer.

[0097] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0098] The second protocol layer sends the first information to the first protocol layer.

[0099] In conjunction with some embodiments of the second aspect, in some embodiments, the network device includes a central unit (CU) and a distributed unit (DU); the method further includes:

[0100] The control plane CP entity of the CU sends the first information to the user plane UP entity of the CU.

[0101] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes at least one of the following:

[0102] If the training task of the model is terminated or suspended, the second protocol layer sends the first information to the first protocol layer;

[0103] If the data packet is not received within the first time, the second protocol layer sends the first information to the first protocol layer;

[0104] The higher layer is used to manage the model; the first time is the time when the network device sends a data packet to the terminal.

[0105] In conjunction with some embodiments of the second aspect, in some embodiments, the first information is used to indicate at least one of the following:

[0106] First data packet;

[0107] Packet data of QoS stream;

[0108] First type of data packet;

[0109] Data packets to be transmitted on the DRB are carried wirelessly.

[0110] Data packets to be transmitted on the logical channel (LCH);

[0111] Data packets in the first group.

[0112] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0113] It is determined that the terminal supports the first capability;

[0114] The first capability includes at least one of the following:

[0115] Based on the ability to discard data packets based on the first data packet;

[0116] The ability to drop packets based on the QoS stream;

[0117] The ability to drop packets based on the first type of packet;

[0118] Based on the ability to discard data packets in the DRB to be transmitted;

[0119] Based on the ability of the data packets to be transmitted in the LCH to discard data packets;

[0120] The ability to discard packets based on packets in the first group.

[0121] In conjunction with some embodiments of the second aspect, in some embodiments, the dropping of data packets at the first protocol layer of the network device based on the first information includes at least one of the following:

[0122] Upon confirming receipt of the first information, the data packet is discarded at the first protocol layer of the network device.

[0123] If it is determined that the first information has been received and the first condition is met, the data packet is dropped at the first protocol layer of the network device; wherein, the first condition is used to trigger the first protocol layer to drop the data packet;

[0124] Based on the first information and the second information, the data packet is dropped at the first protocol layer of the network device; wherein, the second information is used to indicate whether the data packet is associated with a first timer or not, and the first timer is a timer for dropping the data packet.

[0125] In conjunction with some embodiments of the second aspect, in some embodiments, the dropping of data packets at the first protocol layer of the network device based on the first information and the second information includes at least one of the following:

[0126] If it is determined that the first information has been received and the data packet is not associated with the first timer, the data packet is discarded at the first protocol layer of the network device.

[0127] If the first information is received and the data packet is associated with a first timer, the data packet is discarded at the first protocol layer of the network device, whether the first timer times out or not.

[0128] In conjunction with some embodiments of the second aspect, in some embodiments, the first information is also used to indicate that the data packet is discarded upon arrival at a first moment.

[0129] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0130] The first protocol layer of the network device sends third information to the third protocol layer of the network device;

[0131] The third information is used to indicate: discarding data packets that have been sent from the first protocol layer to the third protocol layer; the third protocol layer is a lower layer than the first protocol layer.

[0132] Thirdly, embodiments of this disclosure provide a terminal, the terminal comprising:

[0133] The processing module is configured as follows:

[0134] Based on the first information, the data packet is discarded at the first protocol layer of the terminal;

[0135] The first information is information obtained from the second protocol layer; the first information is used to indicate that the data packet should be discarded.

[0136] In conjunction with some embodiments of the third aspect, in some embodiments, the terminal includes a transceiver module, which is configured to:

[0137] If the training task of the model is terminated or suspended, the first information is sent to the first protocol layer through the second protocol layer;

[0138] If the data packet is not acquired within the first time, the first information is sent to the first protocol layer through the second protocol layer;

[0139] The higher layer is used to manage the model; the first time is the time required for the terminal to send data packets to the network device.

[0140] In conjunction with some embodiments of the third aspect, in some embodiments, the processing module is further configured to be at least one of the following:

[0141] Upon confirming receipt of the first information, the data packet is discarded at the first protocol layer of the terminal.

[0142] If it is determined that the first information has been received and the first condition is met, the data packet is discarded at the first protocol layer of the terminal; wherein, the first condition is used to trigger the discarding of the data packet at the first protocol layer;

[0143] Based on the first information and the second information, the data packet is discarded at the first protocol layer of the terminal; wherein, the second information is used to indicate whether the data packet is associated with a first timer or not, and the first timer is a timer for discarding the data packet.

[0144] In conjunction with some embodiments of the third aspect, in some embodiments, the processing module is further configured to be at least one of the following:

[0145] If it is determined that the first information has been received and that the data packet is not associated with the first timer, the data packet is discarded at the first protocol layer of the terminal.

[0146] Once it is determined that the first information has been received and the data packet is associated with the first timer, the data packet is discarded at the first protocol layer of the terminal, whether the first timer times out or not.

[0147] In conjunction with some embodiments of the third aspect, in some embodiments, the terminal includes a transceiver module, which is configured to:

[0148] The first protocol layer of the terminal sends third information to the third protocol layer of the terminal;

[0149] The third information is used to indicate: discarding data packets that have been sent from the first protocol layer to the third protocol layer; the third protocol layer is a lower layer than the first protocol layer.

[0150] Fourthly, embodiments of this disclosure provide a network device, the network device comprising:

[0151] The transceiver module is configured as follows:

[0152] Based on the first information, the data packet is discarded at the first protocol layer of the network device;

[0153] The first information is information obtained from the second protocol layer; the first information is used to indicate that the data packet should be discarded.

[0154] In conjunction with some embodiments of the fourth aspect, in some embodiments, the network device further includes a transceiver module, which is further configured to send the first information to the user plane UP entity of the CU via the control plane CP entity of the CU.

[0155] In conjunction with some embodiments of the fourth aspect, in some embodiments, the transceiver module is further configured to be at least one of the following:

[0156] If the training task of the model is terminated or suspended, the first information is sent to the first protocol layer through the second protocol layer;

[0157] If the data packet is not acquired within the first time, the first information is sent to the first protocol layer through the second protocol layer;

[0158] The higher layer is used to manage the model; the first time is the time when the network device sends a data packet to the terminal.

[0159] In conjunction with some embodiments of the fourth aspect, in some embodiments, the processing module is further configured to be at least one of the following:

[0160] Upon confirming receipt of the first information, the data packet is discarded at the first protocol layer of the network device.

[0161] If it is determined that the first information has been received and the first condition is met, the data packet is dropped at the first protocol layer of the network device; wherein, the first condition is used to trigger the first protocol layer to drop the data packet;

[0162] Based on the first information and the second information, the data packet is dropped at the first protocol layer of the network device; wherein, the second information is used to indicate whether the data packet is associated with a first timer or not, and the first timer is a timer for dropping the data packet.

[0163] In conjunction with some embodiments of the fourth aspect, in some embodiments, the processing module is further configured to be at least one of the following:

[0164] If it is determined that the first information has been received and the data packet is not associated with the first timer, the data packet is discarded at the first protocol layer of the network device.

[0165] If the first information is received and the data packet is associated with a first timer, the data packet is discarded at the first protocol layer of the network device, whether the first timer times out or not.

[0166] In conjunction with some embodiments of the fourth aspect, in some embodiments, the network device includes a transceiver module configured to:

[0167] The first protocol layer of the network device sends third information to the third protocol layer of the network device;

[0168] The third information is used to indicate: discarding data packets that have been sent from the first protocol layer to the third protocol layer; the third protocol layer is a lower layer than the first protocol layer.

[0169] Fifthly, embodiments of this disclosure provide a communication system, the communication system including a terminal and a network device; the terminal is configured to implement the method described in the first aspect, and the network device is configured to implement the method described in the second aspect.

[0170] Sixthly, embodiments of this disclosure provide a terminal, the terminal comprising:

[0171] One or more processors;

[0172] The terminal is used to execute the method described in the first aspect.

[0173] In a seventh aspect, embodiments of this disclosure provide a network device, the network device comprising:

[0174] One or more processors;

[0175] The network device is used to perform the method described in the second aspect.

[0176] Eighthly, embodiments of this disclosure provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the method described in the optional implementations of the first and / or second aspects.

[0177] Ninthly, embodiments of this disclosure provide a program product that, when executed by a communication device, causes the communication device to perform the method as described in the optional implementations of the first and / or second aspects.

[0178] In a tenth aspect, embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the methods described in optional implementations of the first and / or second aspects.

[0179] Eleventhly, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the methods described according to optional implementations of the first and / or second aspects above.

[0180] It is understood that the aforementioned terminals, network devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0181] This disclosure provides a communication method. In some embodiments, the terms "communication method" and "information indication method," "information processing method," and "information transmission method" can be used interchangeably, as can the terms "communication system" and "information processing system."

[0182] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0183] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0184] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0185] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0186] In the embodiments disclosed herein, "multiple" refers to two or more.

[0187] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0188] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, C, etc.

[0189] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execution of A regardless of B); in some embodiments, B (execution of B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, C, etc.

[0190] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0191] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0192] In some embodiments, terms such as "time / frequency" and "time-frequency domain" refer to the time domain and / or frequency domain.

[0193] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0194] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0195] In some embodiments, devices, etc., can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as “device”, “equipment”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, and “subject” can be used interchangeably.

[0196] In some embodiments, "network" can be interpreted as devices included in a network (e.g., access network devices, core network devices, etc.).

[0197] In some embodiments, the terms "access network device (AN device)," "radio access network device (RAN device)," "base station (BS)," "radio base station," "fixed station," "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "serving cell," "carrier," "component carrier," and "bandwidth part (BWP)" can be used interchangeably.

[0198] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", "subscriber station", "mobile unit", "subscriber unit", "wireless unit", "remote unit", "mobile device", "wireless device", "wireless communication device", "remote device", "mobile subscriber station", "access terminal", "mobile terminal", "wireless terminal", "remote terminal", "handset", "user agent", "mobile client", and "client" can be used interchangeably.

[0199] In some embodiments, access network devices, core network devices, or network devices can be replaced by terminals. For example, embodiments of this disclosure can also be applied to structures where communication between access network devices, core network devices, or network devices and terminals is replaced by communication between multiple terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the structure can also be configured such that the terminal has all or part of the functions of the access network device. Furthermore, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminals (e.g., "sidelink"). For example, uplink channel, downlink channel, etc., can be replaced with sidelink channel, and uplink link, downlink, etc., can be replaced with sidelink link.

[0200] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, core network device, or network device may also be configured to have all or some of the functions of the terminal.

[0201] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0202] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0203] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0204] Figure 1a is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

[0205] As shown in Figure 1a, the communication system 100 includes a terminal 101 and a network device 102.

[0206] In some embodiments, network device 102 may include access network device and / or core network device.

[0207] In some embodiments, terminal 101 includes, but is not limited to, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home.

[0208] In some embodiments, the access network device is, for example, a node or device that connects a terminal to a wireless network. The access network device may include, but is not limited to, at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation eNB (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), radio backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a Wi-Fi system.

[0209] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0210] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0211] In some embodiments, the core network equipment can be a single device, such as a first network device or a second network device, or it can be multiple devices or a group of devices, including all or part of the first network device, the second network device, etc. Network devices can be virtual or physical. Network devices can also be referred to as network elements. The core network includes, for example, at least one of the Evolved Packet Core (EPC), 5G Core Network (5GCN), and Next Generation Core (NGC).

[0212] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0213] The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1a, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1a are illustrative. The communication system may include all or some of the main bodies in FIG1a, or it may include other main bodies outside of FIG1a. The number and form of each main body are arbitrary. Each main body may be physical or virtual. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection may be in any way, such as direct connection or indirect connection, wired connection or wireless connection.

[0214] The embodiments disclosed herein can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other communication methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0215] In some embodiments, the Packet Data Convergence Protocol (PDCP) already includes a timer-based packet dropping mechanism: that is, packets are dropped after the timer expires or after the other end has confirmed the successful transmission of the data.

[0216] In some embodiments, after an AI reference, some packets may not need to wait for the discard timer to expire before being discarded.

[0217] In some embodiments, AI training requires both computing resources and communication links. If a higher layer or the Radio Resource Control (RRC) layer detects a failure in the computing resource request, or if the higher layer terminates or suspends the entire model training task, then there is no need to transmit data that has already been delivered to lower layers, such as the PDCP layer. Data already cached in the PDCP layer can be deleted even if the discard timer has not yet expired, to avoid occupying space in the PDCP buffer.

[0218] In some embodiments, data transmission during AI training needs to meet strict latency requirements. For example, in federated learning, the training results from multiple terminals need to arrive within a specified time to facilitate the merging of training results by the base station. For a single terminal, if data is not transmitted to the base station in a timely manner during this round of training, there is no longer any need for transmission. Data already cached in the PDCP layer can be deleted even if the discard timer has not yet expired, to avoid occupying space in the PDCP buffer.

[0219] Figure 2a is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 2a, the present disclosure relates to a communication method for a communication system 100, the method comprising:

[0220] Step S2101: The terminal or network device determines that the terminal supports the first capability.

[0221] In some embodiments, the terminal or network device determines a first capability supported by the terminal to drop data packets at a first protocol layer.

[0222] In some embodiments, the first capability includes at least one of the following:

[0223] The ability to discard packets based on the first packet;

[0224] The ability to drop packets based on Quality of Service (QoS) flow;

[0225] The ability to drop packets based on the first type of packet;

[0226] Based on the ability to discard data packets in the Data Radio Bearer (DRB) to be transmitted;

[0227] Based on the ability to discard data packets in a logical channel (LCH) to be transmitted.

[0228] In some embodiments, the terminal or network device determines the ability to discard data packets based on the first data packet;

[0229] The ability to discard packets based on packets in the first group.

[0230] For example, the first data packet is a specific data packet that needs to be discarded. This can be understood as the capability being defined based on the per data packet.

[0231] In some embodiments, a terminal or network device determines the ability to drop packets based on the Quality of Service (QoS) flow.

[0232] For example, the packets of a QoS stream can be all the packets included in a QoS stream, which can be understood as the capability being defined per QoS stream.

[0233] It should be noted that this capability can be the ability to discard packets from multiple QoS streams.

[0234] In some embodiments, the terminal or network device determines the ability to discard packets based on the first type of packet.

[0235] For example, the first type of data packet can be a type of data packet with a low importance level, which can be understood as the capability being defined based on the per data packet type.

[0236] It should be noted that this capability can be the ability to discard multiple types of data packets.

[0237] In some embodiments, a terminal or network device determines the ability to discard data packets based on the data packets to be transmitted in the radio bearer.

[0238] For example, the data packets to be transmitted in a radio bearer can be all data packets to be transmitted in the radio bearer, which can be understood as the capability being defined based on per radio bearer.

[0239] It should be noted that this capability can be the ability to discard data packets to be transmitted in multiple radio bearers.

[0240] In some embodiments, a terminal or network device determines the ability to discard data packets based on data packets to be transmitted in a logical channel.

[0241] For example, the data packets to be transmitted in a logical channel can be all data packets to be transmitted in the logical channel; this capability can be understood as being defined based on per logical channel. It should be noted that this capability can also be the ability to discard data packets to be transmitted in multiple logical channels.

[0242] In some embodiments, the terminal or network device determines the ability to discard packets based on packets in the first packet.

[0243] For example, the data packets in the first group can be all the data packets in the first group, and the capability can be immediately defined based on the first group.

[0244] It should be noted that this capability can be the ability to discard packets from multiple packets.

[0245] Step S2102: The first protocol layer obtains the first information from the second protocol layer.

[0246] In some embodiments, the first protocol layer receives first information sent by the second protocol layer.

[0247] In some embodiments, the first information is information obtained from the second protocol layer.

[0248] In some embodiments, the first information is used to instruct the packet to be discarded.

[0249] In some embodiments, the first protocol layer is the Packet Data Convergence Protocol (PDCP) layer, and the second protocol layer is a higher layer than the first protocol layer.

[0250] In some embodiments, the higher layer is the Radio Resource Control (RRC) layer.

[0251] In some embodiments, the second protocol layer sends the first information to the first protocol layer.

[0252] In some embodiments, when the training task of the model is terminated or suspended, the second protocol layer of the terminal sends the first information to the first protocol layer.

[0253] In some embodiments, if the data packet is not received within a first time, the second protocol layer of the terminal sends the first information to the first protocol layer.

[0254] In some embodiments, when the training task of the model is terminated or suspended, the second protocol layer of the network device sends the first information to the first protocol layer.

[0255] In some embodiments, if the data packet is not received within a first time, the second protocol layer of the network device sends the first information to the first protocol layer. In some embodiments, if the terminal determines that the training task of the model has been terminated or suspended, the second protocol layer of the terminal sends the first information to the first protocol layer of the terminal.

[0256] In some embodiments, when a network device determines that the training task of the model has been terminated or suspended, the second protocol layer of the network device sends the first information to the first protocol layer of the network device.

[0257] In some embodiments, if the terminal determines that it has not received the data packet within a first time period, the second protocol layer of the terminal sends the first information to the first protocol layer of the terminal.

[0258] In some embodiments, termination of the training task can also be understood as suspension of the training task, which is not limited here.

[0259] In some embodiments, if the network device determines that it has not received the data packet within a first time period, the second protocol layer of the network device sends the first information to the first protocol layer of the terminal.

[0260] In some embodiments, the higher layer is used to manage the model; the first time is the time when the terminal is required to send data packets to the network device.

[0261] In some embodiments, the model can be an AI model.

[0262] In some embodiments, the first information is used to indicate at least one of the following:

[0263] First data packet;

[0264] Packet data of QoS stream;

[0265] First type of data packet;

[0266] Data packets to be transmitted on the DRB are carried wirelessly.

[0267] Data packets to be transmitted on the logical channel (LCH);

[0268] Data packets in the first group.

[0269] In some embodiments, the terminal supports the ability to discard data packets based on the first data packet, and the first information can be used to indicate the first data packet.

[0270] In some embodiments, the terminal supports the ability to drop packets based on the QoS flow, and the first information can be used to indicate packets in the QoS flow.

[0271] In some embodiments, the terminal supports the ability to discard packets based on the first type of packet, and the first information can be used to indicate the first type of packet.

[0272] In some embodiments, the terminal supports the ability to discard data packets based on the data packets to be transmitted in the DRB, and the first information can be used to indicate the data packets to be transmitted on the Data Radio Bearer DRB.

[0273] In some embodiments, the terminal supports the ability to discard data packets based on the data packets to be transmitted in the LCH, and the first information can be used to indicate the data packets to be transmitted on the logical channel LCH.

[0274] In some embodiments, the terminal supports the ability to discard packets based on packets in the first packet, and the first information can be used to indicate packets in the first packet.

[0275] In some embodiments, the network device supports the ability to drop packets based on the first packet, and the first information can be used to indicate the first packet.

[0276] In some embodiments, the network device supports the ability to drop packets based on the QoS flow, where first information can be used to indicate the QoS flow of the packets.

[0277] In some embodiments, the network device supports the ability to drop packets based on the first type of packet, and the first information can be used to indicate the first type of packet.

[0278] In some embodiments, the network device supports the ability to drop packets based on packets to be transmitted in the DRB, and the first information can be used to indicate packets to be transmitted on the Data Radio Bearer DRB.

[0279] In some embodiments, the network device supports the ability to drop packets based on packets to be transmitted in the LCH, and the first information can be used to indicate packets to be transmitted on the logical channel LCH.

[0280] In some embodiments, the network device supports the ability to drop packets based on packets in the first packet, and the first information can be used to indicate packets in the first packet.

[0281] In some embodiments, the network device includes a central unit (CU) and a distributed unit (DU); the control plane (CP) entity of the CU sends the first information to the user plane (UP) entity of the CU.

[0282] Step S2103: Discard the data packet at the first protocol layer.

[0283] In some embodiments, data packets are dropped at the first protocol layer of the terminal based on first information.

[0284] In some embodiments, data packets are dropped at a first protocol layer of the network device based on first information.

[0285] In some embodiments, the terminal determines that it has received the first information and discards the data packet at the terminal's first protocol layer.

[0286] In some embodiments, if the terminal determines that it has received the first information and that the first condition is met, it discards the data packet at the terminal's first protocol layer.

[0287] In some embodiments, the first condition is used to trigger the dropping of the data packet at the first protocol layer.

[0288] In some embodiments, the terminal discards data packets at the terminal's first protocol layer based on the first information and the second information.

[0289] In some embodiments, the second information is used to indicate whether the data packet is associated with a first timer or not, wherein the first timer is a timer for discarding the data packet.

[0290] In some embodiments, if the terminal determines that it has received the first information and that the data packet is not associated with the first timer, it discards the data packet at the terminal's first protocol layer.

[0291] In some embodiments, the terminal determines that it has received the first information and that the data packet is associated with a first timer, ignores the timing of the first timer, and discards the data packet at the terminal's first protocol layer.

[0292] In some embodiments, the terminal determines that it has received the first information and that the data packet is associated with a first timer, and discards the data packet at the terminal's first protocol layer whether the first timer times out or not.

[0293] In some embodiments, the network device determines that it has received the first information and discards the data packet at the first protocol layer of the network device.

[0294] In some embodiments, if a network device determines that it has received the first information and that a first condition is met, it discards the data packet at the first protocol layer of the network device.

[0295] In some embodiments, the first condition is used to trigger the dropping of the data packet at the first protocol layer.

[0296] In some embodiments, the network device discards data packets at the first protocol layer of the network device based on the first information and the second information.

[0297] In some embodiments, the second information is used to indicate whether the data packet is associated with a first timer or not, wherein the first timer is a timer for discarding the data packet.

[0298] In some embodiments, if a network device determines that it has received the first information and that the data packet is not associated with a first timer, it discards the data packet at the first protocol layer of the network device.

[0299] In some embodiments, the network device determines that it has received the first information and that the data packet is associated with a first timer, ignores the timing of the first timer, and discards the data packet at the first protocol layer of the network device.

[0300] In some embodiments, the network device determines that it has received the first information and that the data packet is associated with a first timer, and discards the data packet at the first protocol layer of the terminal whether the first timer times out or not.

[0301] In some embodiments, the first information is also used to indicate the first condition.

[0302] In some embodiments, the first condition is used to indicate: upon determining that a first moment has arrived, the data packet is discarded.

[0303] In some embodiments, the first information is further used to indicate that if the data packet arrives at a first moment, it should be discarded.

[0304] Step S2104: The first protocol layer sends third information to the third protocol layer.

[0305] In some embodiments, the third protocol layer receives third information sent by the first protocol layer.

[0306] In some embodiments, the third protocol layer of the terminal receives third information sent by the first protocol layer of the terminal.

[0307] In some embodiments, the third protocol layer of the network device receives third information sent by the first protocol layer of the network device.

[0308] In some embodiments, the third information is used to indicate: discarding data packets that have been sent from the first protocol layer to the third protocol layer; the third protocol layer is a lower layer than the first protocol layer.

[0309] In some embodiments, the term "information" may be used interchangeably with terms such as "message," "signal," "signaling," "report," "configuration," "indication," "instruction," "command," "channel," "parameter," "field," and "data."

[0310] In some embodiments, the term "send" may be used interchangeably with terms such as "transmit," "report," or "transmit."

[0311] The information indication method involved in the embodiments of this disclosure may include at least one of steps S2101 to S2104. For example, step S2101 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, step S2103 can be implemented as an independent embodiment, and step S2104 can be implemented as an independent embodiment. For example, step S2102 combined with step S2103 can be implemented as an independent embodiment, steps S2101 and S2102 combined with step S2103 can be implemented as an independent embodiment, and steps S2101, S2102, and S2103 combined with step S2104 can be implemented as an independent embodiment, but it is not limited thereto. It should be noted that each step can be implemented independently, or, without contradiction, the order can be arbitrarily changed and the steps can be freely combined for implementation.

[0312] Figure 3a is a flowchart illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 3a, the embodiment of the present disclosure relates to a communication method executed by a terminal, the method including:

[0313] Step S3101: Determine that the terminal supports the first capability.

[0314] In some embodiments, optional implementations of step S3101 can be found in optional implementations of step S2101 in FIG2a and other related parts in the embodiments involved in FIG2a, which will not be repeated here.

[0315] Step S3102: The first protocol layer obtains the first information from the second protocol layer.

[0316] In some embodiments, optional implementations of step S3102 can be found in optional implementations of step S2102 in FIG2a and other related parts in the embodiments involved in FIG2a, which will not be repeated here.

[0317] Step S3103: Discard the data packet at the first protocol layer.

[0318] In some embodiments, optional implementations of step S3103 can be found in optional implementations of step S2103 in FIG2a and other related parts in the embodiments involved in FIG2a, which will not be repeated here.

[0319] Step S3104: The first protocol layer sends third information to the third protocol layer.

[0320] In some embodiments, optional implementations of step S3104 can be found in optional implementations of step S2104 in FIG2a and other related parts in the embodiments involved in FIG2a, which will not be repeated here.

[0321] The information indication method involved in the embodiments of this disclosure may include at least one of steps S3101 to S3104. For example, step S3101 can be implemented as an independent embodiment, step S3102 can be implemented as an independent embodiment, step S3103 can be implemented as an independent embodiment, and step S3104 can be implemented as an independent embodiment. For example, step S3102 combined with step S3103 can be implemented as an independent embodiment, steps S3101 and S3102 combined with step S3103 can be implemented as an independent embodiment, and steps S3101, S3102, and S3103 combined with step S3104 can be implemented as an independent embodiment, but it is not limited thereto. It should be noted that each step can be implemented independently, or, without contradiction, the order can be arbitrarily changed and the steps can be freely combined for implementation.

[0322] Figure 3b is a flowchart illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 3b, the embodiment of the present disclosure relates to a communication method executed by a terminal, the method including:

[0323] Step S3201: Based on the first information, discard the data packet at the first protocol layer of the terminal.

[0324] In some embodiments, the first information is information obtained from a second protocol layer; the first information is used to indicate that the data packet should be discarded.

[0325] In some embodiments, optional implementations of step S3201 can be found in optional implementations of step S2103 in FIG2a and other related parts in the embodiments involved in FIG2a, which will not be repeated here.

[0326] In some embodiments, the first protocol layer is the Packet Data Convergence Protocol (PDCP) layer, and the second protocol layer is a higher layer than the first protocol layer.

[0327] In some embodiments, the higher layer is the Radio Resource Control (RRC) layer.

[0328] In some embodiments, the method further includes:

[0329] The second protocol layer sends the first information to the first protocol layer.

[0330] In some embodiments, the method further includes at least one of the following:

[0331] If the training task of the model is terminated or suspended, the second protocol layer sends the first information to the first protocol layer;

[0332] If the data packet is not received within the first time, the second protocol layer sends the first information to the first protocol layer;

[0333] The higher layer is used to manage the model; the first time is the time required for the terminal to send data packets to the network device.

[0334] In some embodiments, the first information is used to indicate at least one of the following:

[0335] First data packet;

[0336] Packet data of QoS stream;

[0337] First type of data packet;

[0338] Data packets to be transmitted on the DRB are carried wirelessly.

[0339] Data packets to be transmitted on the logical channel (LCH);

[0340] Data packets in the first group.

[0341] In some embodiments, the method further includes:

[0342] It is determined that the terminal supports the first capability;

[0343] The first capability includes at least one of the following:

[0344] Based on the ability to discard data packets based on the first data packet;

[0345] The ability to drop packets based on the QoS stream;

[0346] The ability to drop packets based on the first type of packet;

[0347] Based on the ability to discard data packets in the DRB to be transmitted;

[0348] Based on the ability of the data packets to be transmitted in the LCH to discard data packets;

[0349] The ability to discard packets based on packets in the first group.

[0350] In some embodiments, the dropping of data packets at the first protocol layer of the terminal based on the first information includes at least one of the following:

[0351] Upon confirming receipt of the first information, the data packet is discarded at the first protocol layer of the terminal.

[0352] If it is determined that the first information has been received and the first condition is met, the data packet is discarded at the first protocol layer of the terminal; wherein, the first condition is used to trigger the discarding of the data packet at the first protocol layer;

[0353] Based on the first information and the second information, the data packet is discarded at the first protocol layer of the terminal; wherein, the second information is used to indicate whether the data packet is associated with a first timer or not, and the first timer is a timer for discarding the data packet.

[0354] In some embodiments, discarding data packets at the first protocol layer of the terminal based on the first information and the second information includes at least one of the following:

[0355] If it is determined that the first information has been received and that the data packet is not associated with the first timer, the data packet is discarded at the first protocol layer of the terminal.

[0356] Once it is determined that the first information has been received and the data packet is associated with the first timer, the data packet is discarded at the first protocol layer of the terminal, whether the first timer times out or not.

[0357] In some embodiments, the first information is further used to indicate that if the data packet arrives at a first moment, it should be discarded.

[0358] In some embodiments, the method further includes:

[0359] The first protocol layer of the terminal sends third information to the third protocol layer of the terminal;

[0360] The third information is used to indicate: discarding data packets that have been sent from the first protocol layer to the third protocol layer; the third protocol layer is a lower layer than the first protocol layer.

[0361] Figure 4a is a flowchart illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 4a, the embodiment of the present disclosure relates to a communication method executed by a network device, the method including:

[0362] Step S4101: Determine that the terminal supports the first capability.

[0363] In some embodiments, optional implementations of step S4101 can be found in optional implementations of step S2101 in FIG2a and other related parts in the embodiments involved in FIG2a, which will not be repeated here.

[0364] Step S4102: The first protocol layer obtains the first information from the second protocol layer.

[0365] In some embodiments, optional implementations of step S4102 can be found in optional implementations of step S2102 in FIG2a and other related parts in the embodiments involved in FIG2a, which will not be repeated here.

[0366] Step S4103: Discard the data packet at the first protocol layer.

[0367] In some embodiments, optional implementations of step S4103 can be found in optional implementations of step S2103 in FIG2a and other related parts in the embodiments involved in FIG2a, which will not be repeated here.

[0368] Step S4104: The first protocol layer sends third information to the third protocol layer.

[0369] In some embodiments, optional implementations of step S4104 can be found in optional implementations of step S2104 in FIG2a and other related parts in the embodiments involved in FIG2a, which will not be repeated here.

[0370] The information indication method involved in the embodiments of this disclosure may include at least one of steps S4101 to S4104. For example, step S4101 can be implemented as an independent embodiment, step S4102 can be implemented as an independent embodiment, step S4103 can be implemented as an independent embodiment, and step S4104 can be implemented as an independent embodiment. For example, step S4102 combined with step S4103 can be implemented as an independent embodiment, steps S4101 and S4102 combined with step S4103 can be implemented as an independent embodiment, and steps S4101, S4102, and S4103 combined with step S4104 can be implemented as an independent embodiment, but it is not limited thereto. It should be noted that each step can be implemented independently, or, without contradiction, the order can be arbitrarily changed and the steps can be freely combined for implementation.

[0371] Figure 4b is a flowchart illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 4b, the embodiment of the present disclosure relates to a communication method executed by a network device, the method including:

[0372] Step S4201: Based on the first information, discard the data packet at the first protocol layer of the network device.

[0373] In some embodiments, the first information is information obtained from a second protocol layer; the first information is used to indicate that the data packet should be discarded.

[0374] In some embodiments, optional implementations of step S4201 can be found in optional implementations of step S2103 in FIG2a and other related parts in the embodiments involved in FIG2a, which will not be repeated here.

[0375] In some embodiments, the first protocol layer is the Packet Data Convergence Protocol (PDCP) layer, and the second protocol layer is a higher layer than the first protocol layer.

[0376] In some embodiments, the higher layer is the Radio Resource Control (RRC) layer.

[0377] In some embodiments, the method further includes:

[0378] The second protocol layer sends the first information to the first protocol layer.

[0379] In some embodiments, the network device includes a central unit (CU) and a distributed unit (DU); the method further includes:

[0380] The control plane CP entity of the CU sends the first information to the user plane UP entity of the CU.

[0381] In some embodiments, the method further includes at least one of the following:

[0382] If the training task of the model is terminated or suspended, the second protocol layer sends the first information to the first protocol layer;

[0383] If the data packet is not received within the first time, the second protocol layer sends the first information to the first protocol layer;

[0384] The higher layer is used to manage the model; the first time is the time when the network device sends a data packet to the terminal.

[0385] In some embodiments, the first information is used to indicate at least one of the following:

[0386] First data packet;

[0387] Packet data of QoS stream;

[0388] First type of data packet;

[0389] Data packets to be transmitted on the DRB are carried wirelessly.

[0390] Data packets to be transmitted on the logical channel (LCH);

[0391] Data packets in the first group.

[0392] In some embodiments, the method further includes:

[0393] It is determined that the terminal supports the first capability;

[0394] The first capability includes at least one of the following:

[0395] Based on the ability to discard data packets based on the first data packet;

[0396] The ability to drop packets based on the QoS stream;

[0397] The ability to drop packets based on the first type of packet;

[0398] Based on the ability to discard data packets in the DRB to be transmitted;

[0399] Based on the ability of the data packets to be transmitted in the LCH to discard data packets;

[0400] The ability to discard packets based on packets in the first group.

[0401] In some embodiments, dropping data packets at the first protocol layer of the network device based on the first information includes at least one of the following:

[0402] Upon confirming receipt of the first information, the data packet is discarded at the first protocol layer of the network device.

[0403] If it is determined that the first information has been received and the first condition is met, the data packet is dropped at the first protocol layer of the network device; wherein, the first condition is used to trigger the first protocol layer to drop the data packet;

[0404] Based on the first information and the second information, the data packet is dropped at the first protocol layer of the network device; wherein, the second information is used to indicate whether the data packet is associated with a first timer or not, and the first timer is a timer for dropping the data packet.

[0405] In some embodiments, the step of discarding data packets at the first protocol layer of the network device based on the first information and the second information includes at least one of the following:

[0406] If it is determined that the first information has been received and the data packet is not associated with the first timer, the data packet is discarded at the first protocol layer of the network device.

[0407] If the first information is received and the data packet is associated with a first timer, the data packet is discarded at the first protocol layer of the network device, whether the first timer times out or not.

[0408] In some embodiments, the first information is further used to indicate that if the data packet arrives at a first moment, it should be discarded.

[0409] In some embodiments, the method further includes:

[0410] The first protocol layer of the network device sends third information to the third protocol layer of the network device;

[0411] The third information is used to indicate: discarding data packets that have been sent from the first protocol layer to the third protocol layer; the third protocol layer is a lower layer than the first protocol layer.

[0412] Figure 5a is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 5a, the present disclosure relates to a communication method for a communication system 100, the method including one of the following steps:

[0413] Step S5101: The network device and / or terminal discards the data packet at the first protocol layer based on the first information.

[0414] In some embodiments, the first information is information obtained from a second protocol layer; the first information is used to indicate that the data packet should be discarded.

[0415] In some embodiments, optional implementations of step S5101 can be found in the optional implementations of the steps in FIG2a and other related parts in the embodiments involved in FIG2a, which will not be repeated here.

[0416] In some embodiments, the above methods may include the methods of the first core network equipment side and terminal side embodiments described above, which will not be repeated here.

[0417] To better understand the embodiments of this disclosure, the following exemplary embodiments are provided for further explanation:

[0418] In some embodiments, a mechanism is provided for dropping data packets at the PDCP layer according to instructions from a higher layer.

[0419] In some embodiments, the upper layer can be the upper layer; for example, if the upper layer is responsible for managing the model execution state, then when the entire model training task is terminated or suspended, there is no need to transmit the data that has already been delivered to the lower layer, such as the PDCP layer, so an instruction is sent to the PDCP to instruct it to discard the relevant data packets.

[0420] In some embodiments, the higher layer can be the RRC layer. For example, if the RRC layer detects that the computing power request has failed, and the entire model training task is terminated or suspended, then there is no need to transmit the data that has already been delivered to the lower layer, such as the PDCP layer. In this case, an instruction is sent to the PDCP layer to instruct it to discard the relevant data packets.

[0421] In some embodiments, the higher layers may also extend to the MAC layer, physical layer, etc., but are not limited thereto; in some embodiments, the target data packets that the higher layers instruct the PDCP layer to discard may be at least one of the following:

[0422] Per packet granularity; that is, indicating that a specific packet should be dropped; at this time, the higher layer indicates to the PDCP layer the specific packet to be dropped;

[0423] Per QoS flow granularity; that is, indicating which packets are to be dropped for this QoS flow; at this time, the higher layer indicates to the PDCP layer which packets belong to this QoS flow;

[0424] Per packet category granularity; that is, indicating which packets of this category should be dropped; for example, a higher layer instructs the PDCP layer to drop packets with low importance.

[0425] Per DRB granularity; that is, to indicate that all packets to be transmitted for this DRB should be discarded;

[0426] Per LCH granularity; that is, to indicate that all data packets to be transmitted for this logical channel should be discarded.

[0427] It should be noted that higher levels can instruct multiple drops in the above dimensions, such as dropping packets from multiple DRBs.

[0428] In some embodiments, when a higher layer instructs PDCP to drop a data packet, it may include a trigger condition for dropping the packet:

[0429] In some embodiments, the higher layer provides a predetermined time point, at which point the data is immediately discarded.

[0430] In some embodiments, upon receiving the instruction signaling, the PDCP will discard the target data packet accordingly.

[0431] In some embodiments, the method of disposal may be immediate disposal.

[0432] In some embodiments, the method of discarding may be to discard at a specified time point.

[0433] In some embodiments, PDCP packets are dropped:

[0434] If a data packet is not associated with a drop timer, it is dropped immediately.

[0435] If a data packet has already been assigned a drop timer, it will be dropped regardless of whether the timer has expired.

[0436] If a data packet has already been sent to the low layer, instruct the low layer to discard the relevant data packet.

[0437] In some embodiments, the capability supported by the mechanism for the terminal PDCP layer to drop packets according to instructions from higher layers is defined.

[0438] In some embodiments, this may refer to whether or not the ability to drop packets per packet, per QoS flow, per DRB, and / or per LCH / per packet category is supported.

[0439] In some embodiments, if the PDCP entity is on the base station side, for a CU-DU separation architecture, the higher layers instruct the PDCP to drop data packets, which need to be passed from the CU-CP entity to the CU-UP entity. Here, CU stands for Centralized Unit, CU for Distributed Unit, and UP for User Plane.

[0440] In some embodiments, the packet loss behavior on the base station side is implemented on the base station side.

[0441] This disclosure also provides an apparatus for implementing any of the above methods. For example, an apparatus is provided that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Alternatively, another apparatus is provided that includes units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, etc.) in any of the above methods.

[0442] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0443] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).

[0444] Figure 6a is a schematic diagram of the terminal structure according to an embodiment of this disclosure. As shown in Figure 6a, the terminal 6100 may include at least one of a transceiver module 6101, a processing module 6102, etc. In some embodiments, the transceiver module is used to send and receive information. Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the terminal in any of the above methods, which will not be described in detail here. Optionally, the processing module is used to perform at least one of the other steps performed by the terminal in any of the above methods, which will not be described in detail here.

[0445] Figure 6b is a schematic diagram of the network device proposed in an embodiment of this disclosure. As shown in Figure 6b, the network device 6200 may include at least one of a transceiver module 6201, a processing module 6202, etc. In some embodiments, the transceiver module is used to send and receive information. Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the network device in any of the above methods, which will not be described in detail here. Optionally, the processing module is used to perform at least one of the other steps performed by the network device in any of the above methods, which will not be described in detail here.

[0446] Figure 7a is a schematic diagram of the structure of the communication device 9100 proposed in an embodiment of this disclosure. The communication device 9100 can be a network device (e.g., access network device, core network device, etc.), a terminal (e.g., user equipment, etc.), a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 9100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0447] As shown in Figure 7a, the communication device 9100 includes one or more processors 9101. The processor 9101 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. The communication device 9100 is used to execute any of the above methods.

[0448] In some embodiments, the communication device 9100 further includes one or more memories 9102 for storing instructions. Optionally, all or part of the memories 9102 may also be located outside the communication device 9100.

[0449] In some embodiments, the communication device 9100 further includes one or more transceivers 9103. When the communication device 9100 includes one or more transceivers 9103, the transceivers 9103 perform at least one of the communication steps such as sending and / or receiving in the above method, and the processor 9101 performs at least one of the other steps.

[0450] In some embodiments, a transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, etc., may be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., may be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., may be used interchangeably.

[0451] In some embodiments, the communication device 9100 may include one or more interface circuits 9104. Optionally, the interface circuit 9104 is connected to the memory 9102, and the interface circuit 9104 can be used to receive signals from the memory 9102 or other devices, and can be used to send signals to the memory 9102 or other devices. For example, the interface circuit 9104 can read instructions stored in the memory 9102 and send the instructions to the processor 9101.

[0452] The communication device 9100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 9100 described in this disclosure is not limited thereto, and the structure of the communication device 9100 may not be limited by FIG7a. The communication device may be a standalone device or may be part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0453] Figure 7b is a schematic diagram of the structure of the chip 9200 proposed in an embodiment of this disclosure. For cases where the communication device 9100 can be a chip or a chip system, please refer to the schematic diagram of the chip 9200 shown in Figure 7b, but it is not limited thereto.

[0454] Chip 9200 includes one or more processors 9201, which are used to perform any of the above methods.

[0455] In some embodiments, chip 9200 further includes one or more interface circuits 9202. Optionally, the interface circuit 9202 is connected to memory 9203, and the interface circuit 9202 can be used to receive signals from memory 9203 or other devices, and the interface circuit 9202 can be used to send signals to memory 9203 or other devices. For example, the interface circuit 9202 can read instructions stored in memory 9203 and send the instructions to processor 9201.

[0456] In some embodiments, the interface circuit 9202 performs at least one of the communication steps such as sending and / or receiving in the above method, and the processor 9201 performs at least one of the other steps.

[0457] In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc., can be used interchangeably.

[0458] In some embodiments, chip 9200 further includes one or more memories 9203 for storing instructions. Optionally, all or part of the memories 9203 may be located outside of chip 9200.

[0459] This disclosure also proposes a storage medium storing instructions that, when executed on the communication device 9100, cause the communication device 9100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0460] This disclosure also provides a program product that, when executed by the communication device 9100, causes the communication device 9100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0461] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims

1. A communication method, characterized in that, The method is executed by a terminal, and the method includes: Based on the first information, the data packet is discarded at the first protocol layer of the terminal; The first information is information obtained from the second protocol layer; the first information is used to indicate that the data packet should be discarded.

2. The method according to claim 1, characterized in that, The first protocol layer is the Packet Data Convergence Protocol (PDCP) layer, and the second protocol layer is a higher layer than the first protocol layer.

3. The method according to claim 1 or 2, characterized in that, The higher layer is the Radio Resource Control (RRC) layer.

4. The method according to any one of claims 1 to 3, characterized in that, The method further includes at least one of the following: If the training task of the model is terminated or suspended, the second protocol layer sends the first information to the first protocol layer; If the data packet is not received within the first time, the second protocol layer sends the first information to the first protocol layer; The higher layer is used to manage the model; the first time is the time required for the terminal to send data packets to the network device.

5. The method according to any one of claims 1 to 4, characterized in that, The first information is used to indicate at least one of the following: First data packet; Packet data of QoS stream; First type of data packet; Data packets to be transmitted on the DRB are carried wirelessly. Data packets to be transmitted on the logical channel (LCH); Data packets in the first group.

6. The method according to claim 5, characterized in that, The method further includes: It is determined that the terminal supports the first capability; The first capability includes at least one of the following: Based on the ability to discard data packets based on the first data packet; The ability to drop packets based on the QoS stream; The ability to drop packets based on the first type of packet; Based on the ability to discard data packets in the DRB to be transmitted; Based on the ability of the data packets to be transmitted in the LCH to discard data packets; The ability to discard packets based on packets in the first group.

7. The method according to any one of claims 1 to 6, characterized in that, The decision to discard data packets at the first protocol layer of the terminal based on the first information includes at least one of the following: Upon confirming receipt of the first information, the data packet is discarded at the first protocol layer of the terminal. If it is determined that the first information has been received and the first condition is met, the data packet is discarded at the first protocol layer of the terminal; wherein, the first condition is used to trigger the discarding of the data packet at the first protocol layer; Based on the first information and the second information, the data packet is discarded at the first protocol layer of the terminal; wherein, the second information is used to indicate whether the data packet is associated with a first timer or not, and the first timer is a timer for discarding the data packet.

8. The method according to claim 7, characterized in that, The decision to discard data packets at the first protocol layer of the terminal based on the first and second information includes at least one of the following: If it is determined that the first information has been received and that the data packet is not associated with the first timer, the data packet is discarded at the first protocol layer of the terminal. Once it is determined that the first information has been received and the data packet is associated with the first timer, the data packet is discarded at the first protocol layer of the terminal, whether the first timer times out or not.

9. The method according to claim 7, characterized in that, The first information is also used to indicate that if the data packet arrives at the first moment, it should be discarded.

10. The method according to any one of claims 1 to 9, characterized in that, The method further includes: The first protocol layer of the terminal sends third information to the third protocol layer of the terminal; The third information is used to indicate: discarding data packets that have been sent from the first protocol layer to the third protocol layer; the third protocol layer is a lower layer than the first protocol layer.

11. A communication method, characterized in that, The method is performed by a network device, and the method includes: Based on the first information, the data packet is discarded at the first protocol layer of the network device; The first information is information obtained from the second protocol layer; the first information is used to indicate that the data packet should be discarded.

12. The method according to claim 11, characterized in that, The first protocol layer is the Packet Data Convergence Protocol (PDCP) layer, and the second protocol layer is a higher layer than the first protocol layer.

13. The method according to claim 11 or 12, characterized in that, The higher layer is the Radio Resource Control (RRC) layer.

14. The method according to any one of claims 1 to 13, characterized in that, The network device includes a central unit (CU) and a distributed unit (DU); the method further includes: The control plane CP entity of the CU sends the first information to the user plane UP entity of the CU.

15. The method according to any one of claims 1 to 14, characterized in that, The method further includes at least one of the following: If the training task of the model is terminated or suspended, the second protocol layer sends the first information to the first protocol layer; If the data packet is not received within the first time, the second protocol layer sends the first information to the first protocol layer; The higher layer is used to manage the model; the first time is the time when the network device sends a data packet to the terminal.

16. The method according to any one of claims 11 to 15, characterized in that, The first information is used to indicate at least one of the following: First data packet; Packet data of QoS stream; First type of data packet; Data packets to be transmitted on the DRB are carried wirelessly. Data packets to be transmitted on the logical channel (LCH); Data packets in the first group.

17. The method according to claim 16, characterized in that, The method further includes: It is determined that the terminal supports the first capability; The first capability includes at least one of the following: Based on the ability to discard data packets based on the first data packet; The ability to drop packets based on the QoS stream; The ability to drop packets based on the first type of packet; Based on the ability to discard data packets in the DRB to be transmitted; Based on the ability of the data packets to be transmitted in the LCH to discard data packets; The ability to discard packets based on packets in the first group.

18. The method according to any one of claims 11 to 17, characterized in that, The decision to discard data packets at the first protocol layer of the network device based on the first information includes at least one of the following: Upon confirming receipt of the first information, the data packet is discarded at the first protocol layer of the network device. Upon determining that the first information has been received and the first condition is met, the data packet is discarded at the first protocol layer of the network device; wherein, the first condition is used to trigger the first protocol layer to discard the data packet; Based on the first information and the second information, the data packet is dropped at the first protocol layer of the network device; wherein, the second information is used to indicate whether the data packet is associated with a first timer or not, and the first timer is a timer for dropping the data packet.

19. The method according to claim 18, characterized in that, The decision to discard data packets at the first protocol layer of the network device based on the first and second information includes at least one of the following: If it is determined that the first information has been received and the data packet is not associated with the first timer, the data packet is discarded at the first protocol layer of the network device. If the first information is received and the data packet is associated with a first timer, the data packet is discarded at the first protocol layer of the network device, whether the first timer times out or not.

20. The method according to claim 18, characterized in that, The first information is also used to indicate that if the data packet arrives at the first moment, it should be discarded.

21. The method according to any one of claims 11 to 20, characterized in that, The method further includes: The first protocol layer of the network device sends third information to the third protocol layer of the network device; The third information is used to indicate: discarding data packets that have been sent from the first protocol layer to the third protocol layer; the third protocol layer is a lower layer than the first protocol layer.

22. A terminal, characterized in that, The terminal includes: The processing module is configured as follows: Based on the first information, the data packet is discarded at the first protocol layer of the terminal; The first information is information obtained from the second protocol layer; the first information is used to indicate that the data packet should be discarded.

23. The terminal according to claim 22, characterized in that, The terminal includes a transceiver module, which is configured to: If the training task of the model is terminated or suspended, the first information is sent to the first protocol layer through the second protocol layer; If the data packet is not acquired within the first time, the first information is sent to the first protocol layer through the second protocol layer; The higher layer is used to manage the model; the first time is the time required for the terminal to send data packets to the network device.

24. The terminal according to claim 22 or 23, characterized in that, The processing module is also configured to be at least one of the following: Upon confirming receipt of the first information, the data packet is discarded at the first protocol layer of the terminal. If it is determined that the first information has been received and the first condition is met, the data packet is discarded at the first protocol layer of the terminal; wherein, the first condition is used to trigger the discarding of the data packet at the first protocol layer; Based on the first information and the second information, the data packet is discarded at the first protocol layer of the terminal; wherein, the second information is used to indicate whether the data packet is associated with a first timer or not, and the first timer is a timer for discarding the data packet.

25. The terminal according to claim 24, characterized in that, The processing module is also configured to be at least one of the following: If it is determined that the first information has been received and that the data packet is not associated with the first timer, the data packet is discarded at the first protocol layer of the terminal. Once it is determined that the first information has been received and the data packet is associated with the first timer, the data packet is discarded at the first protocol layer of the terminal, whether the first timer times out or not.

26. The terminal according to any one of claims 22 to 25, characterized in that, The terminal includes a transceiver module, which is configured to: The third information is sent from the first protocol layer of the terminal to the third protocol layer of the terminal; The third information is used to indicate: discarding data packets that have been sent from the first protocol layer to the third protocol layer; the third protocol layer is a lower layer than the first protocol layer.

27. A network device, characterized in that, The network device includes: The processing module is configured as follows: Based on the first information, the data packet is discarded at the first protocol layer of the network device; The first information is information obtained from the second protocol layer; the first information is used to indicate that the data packet should be discarded.

28. The network device according to claim 27, characterized in that, The network device further includes a transceiver module, which is configured to send the first information to the user plane UP entity of the CU through the control plane CP entity of the CU.

29. The network device according to claim 28, characterized in that, The transceiver module is also configured to be at least one of the following: If the training task of the model is terminated or suspended, the first information is sent to the first protocol layer through the second protocol layer; If the data packet is not acquired within the first time, the first information is sent to the first protocol layer through the second protocol layer; The higher layer is used to manage the model; the first time is the time when the network device sends a data packet to the terminal.

30. The network device according to any one of claims 27 to 29, characterized in that, The processing module is also configured to be at least one of the following: Upon confirming receipt of the first information, the data packet is discarded at the first protocol layer of the network device. Upon determining that the first information has been received and the first condition is met, the data packet is discarded at the first protocol layer of the network device; wherein, the first condition is used to trigger the first protocol layer to discard the data packet; Based on the first information and the second information, the data packet is dropped at the first protocol layer of the network device; wherein, the second information is used to indicate whether the data packet is associated with a first timer or not, and the first timer is a timer for dropping the data packet.

31. The network device according to claim 30, characterized in that, The processing module is also configured to be at least one of the following: If it is determined that the first information has been received and the data packet is not associated with the first timer, the data packet is discarded at the first protocol layer of the network device. If the first information is received and the data packet is associated with a first timer, the data packet is discarded at the first protocol layer of the network device, whether the first timer times out or not.

32. The network device according to any one of claims 27 to 31, characterized in that, The network device includes a transceiver module, which is configured to: The first protocol layer of the network device sends third information to the third protocol layer of the network device; The third information is used to indicate: discarding data packets that have been sent from the first protocol layer to the third protocol layer; the third protocol layer is a lower layer than the first protocol layer.

33. A communication system, characterized in that, The communication system includes a terminal and a network device; the terminal is configured to implement the method of any one of claims 1 to 10, and the network device is configured to implement the method of any one of claims 11 to 21.

34. A terminal, characterized in that, The terminal includes: One or more processors; The terminal is used to execute the method according to any one of claims 1 to 10.

35. A network device, characterized in that, The network device includes: One or more processors; The network device is used to perform the method according to any one of claims 11 to 21.

36. A computer program product, comprising a computer program or instructions, characterized in that, When the computer program or instructions are executed by a processor, they implement the steps of the method according to any one of claims 1 to 10 and / or claims 11 to 21.

37. A storage medium, characterized in that, The storage medium stores instructions that, when executed on a communication device, cause the communication device to perform the method of any one of claims 1 to 10 and / or claims 11 to 21.

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